| Components |

| 1. Water temperature control assembly 2. Thermostat | 3. Water inlet fitting pipe |
Troubleshooting SymptomsPossible CausesRemedyCoolant leakage • From the bleed hole of the water pump Visually check • Check leaks after about ten-minute warming up.
Removal Removal of the thermostat would have an adverse effect, causing a lowering of cooling efficiency. Do not remove the thermostat, even if the engine tends to overheat.
Replacement 1. Discharge refrigerant from refrigeration system. 2. Replace faulty tube or hose. Cap the open fittings immediately to keep moisture or dirt out of the system. 3. Tighten joint of bolt or nut to specified torque.
Removal 1. If the compressor is marginally operable, run the engine at idle speed, and let the air conditioning work for a few minutes, then shut the engine off. 2. Disconnect the negative cable from the battery. 3. Recover the refrigerant with a recovery/charging station.